Carl zwickart



' (Mode 1.)

' 0. ZWIUKART.

SEAL LOCK.

No. 399,722. Patented Mar. 19, 1889 UNITED STATES FATENT OFFICE.

CARL ZVVICKART, OF SALZVVEDEL, PRUSSIA, GERMANY.

SEAL-LOCK.

SPECIFICATION forming part of Letters Patent No. 399,722, dated March19, 1889.

Application filed June 9,

1886- Scrial No. 204,668. (ModeL) Patented in Germany April 1'7, 1886,No. 39,052, and in France April 21, 1886,11! 175,66l.

To aZZ whom it may concern.-

Be it known that I, CARL ZWICKART, of Salzwedel, in the Kingdom ofPrussia and German Empire, have invented a new and useful Seal-Lock forGoodsW'agons on Railways, with a Double Safety Contrivance, of which thefollowing is a specification, reference being had therein to theaccompanying drawings.

Patented in Germany April 17, 1886,No. 39,052, and in France April 21,1886, No. 175,6652.

This invention relates to seal-locks for railway, express cars, &c.; andit consists in certain improvements in the construction oflocks of thatclass, as hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a general view of the lockmechanism. Fig. 2 is a front view of the lock closed with thesafety-bands applied. Fig. 3 is a side view of one of the safety-bands.Fig. 4 is a crosssection of a safety-band.

Referring to the drawings, the two main parts of the lock are designatedby B and B, one of said parts being secured to a stationary part of theside of the car and the other being fixed to the movable door, so thatwhen the door is closed a hook or latch connected with one part of thelock enters the opposite part and is caught by a spring bolt or catch.

A and A indicate the lock-plates, to the latter of which is fixed ahook, a, which extends out from one part of the lock in position toenter the other part when the door is closed.

To the plate A is secured a movable bolt, 1), which is provided with aspring, I), the said bolt being constructed and in position to bepressed downward by the hook to when the latter is brought in contactwith the bolt, and when the parts A and A are brought close together, asseen in Fig. 1, the bolt 1) immediately rises, being actuated by thespring I), and connects with the hook a, the door being thus locked.

A head, 0, is placed in each of the main parts B B of the lock, eachhead being in a socket formed in the casing and provided with an angularkey-post and circular aperture to admit the key of the look, by whichthe head may be turned. Each of the heads one of the heads 0, as shown.

C is provided with two arms, 61, extending therefrom, for the purposehereinafter mentioned. Two levers, f, are pivoted in each of the mainparts of the lock, and are severally in position to be engaged by anarm, d, of The levers f are each provided with a tongue or projection,g, a spring, 6, and a guard, m. Four vertical slits, E, are made in thelock-platestwo being in plate A and two in A and one slit in each plateis in position on an extended horizontal line running across thekey-holes of the lock. The two lower slits are also arranged in positionon a line, one being in each of the loclcplates, as shown.

As will be seen, the tongues g of levers f are severally in positionacross the slits E, said tongues being intended to connect with the endsof seals inserted in the slit, as hereinafter set forth. Two seals, 01,which are usually formed of tin, the ends of each seal being bent atright angles, as shown, are applied to the outside of the lock withtheir extremities inserted in the slits E.

The tongues g, or that portion of each tongue which crosses a slit E, isbeveled, so

that when the ends of a seal 2' are pressed into slits the tongues arepressed backward. The rectangular extremities of the seals are providedwith apertures h, and when the door is closed and fastened by the hookand bolt a and b a seal i may be applied by pressing its extremitiesinto slits E, and the ends of the seal pressing against the beveledsurfaces of tongues g, the latter are moved backward, thus allowing theends of the seal to enter the look, when the tongues are immediatelypressed by the springs e into the apertures h, the seal being thus drawnclose to the outside of the casing and secured. Guides 11 are fixed tothe casing for the tongues g.

The head 0 which is adjacent to the movable bolt 1) is provided with acam. or projection, 0, by which the bolt maybe withdrawn from engagementwith hook at, the head being turned by the key. The levers f may also bepressed backward by turning the heads 0, the arms (1 being constructedto press against them, and the tongues 9 may be thus withdrawn fromconnection with the ends of the seals 2' in the slits E.

The upper tin seal '5 covers the key-holes, as seen in Fig. 2, and thisseal is only applied when additional security is deemed necessary oradvisable, the lower seal 1' being generally considered sufficient.

A number of private seals or other identifying-marks may be impressedupon the upper seal by the shipper, if desired, thereby affordingadditional security against surreptitious opening of the look withoutdetection,

for when the upper seal is used it must be severed before the lock canbe opened, and when once destroyed it cannot be replaced or restored, asin the case of a plain seal.

I claim 1. The combination, with a lock-case made in two parts andprovided with a securingbolt, of two heads placed in sockets andprovided with arms d, two slits, and two pivoted levers provided withtongues which are in position to engage the seals 2', said two leversbeing adapted to be engaged by the arms of said heads, substantially asand for the purposes described.

2. In combination with a lock-case provided with a slit, E, and alock-bolt, a head placed in a socket and provided with an arm, d, and aprojection adapted to retract the lock-bolt, and a pivoted lever, f,provided with a spring and a tongue, 9, which is in position to engageseal 2', substantially as set forth and described.

3. The combination, with the lock-casing divided into two parts, eachhaving a slit, E, of a seal provided with perforated extremities adaptedto be inserted in the slits, and devices, substantially as described,adapted to engage said extremities, substantially as and for thepurposes described.

I11 witness whereof I have hereunto set my hand in presence of twowitnesses.

CARL ZWIOKART. Witnesses:

W1LHELM PATAKY, B. R01.

